Electric logging truck energy storage intelligent micro-grid control method

Abstract

The invention discloses an intelligent micro-grid control method for energy storage of an electric logging truck, and the method comprises the steps: configuring a set of energy storage device which meets the use requirements according to the logging power demand and the logging truck power demand, and achieving the grid-connected and off-grid operation of logging equipment through the combination of the energy storage device and external grid electricity of a well site; and then all loads related to logging are managed in real time through an energy management system, the lowering potential energy of a logging winch is recycled and utilized, and effective and reasonable regulation and management of energy are achieved. The potential energy recovery technology is used for replacing braking heat loss to achieve energy recovery, energy flows between the energy conversion devices according to the optimal route through the energy management system (EMS), and the energy utilization rate of logging truck operation is increased.

Description

Technical Field

[0001] The present invention belongs to the technical field of petroleum equipment, and in particular relates to a method for controlling an energy storage smart microgrid of an electric logging vehicle. Background Art

[0002] At present, the chassis of oilfield logging vehicles at home and abroad are mainly fuel chassis, and the logging winch relies on diesel engine to drive the hydraulic system control, and a small number of logging vehicles are also controlled by electric drive. Diesel engines have high fuel consumption, high noise, and serious environmental pollution; the system transmission efficiency is low, the maintenance cost is high, and the logging potential energy recovery cannot be achieved. The integration and intelligence level is low. With the development of energy storage technology, the life of energy storage batteries is constantly improving, and on-board energy storage is becoming more and more mature. Applying energy storage technology and smart energy management technology to logging vehicles will ultimately realize the electric drive of logging vehicle power and equipment and the comprehensive utilization and management of energy. Summary of the invention

[0003] The purpose of the present invention is to provide an energy storage intelligent microgrid control method for an electric logging vehicle to solve the problems of high diesel engine investment, low fuel utilization rate and air pollution during logging operations.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: an electric logging vehicle energy storage smart microgrid control method, including: configuring a set of energy storage devices that meet the use requirements according to the logging power demand and the logging vehicle power demand, and providing power through the energy storage device combined with the external grid power of the well site to realize the grid-connected and off-grid operation of the logging equipment; then, through the energy management system, all loads involved in the logging are managed in real time and the potential energy released by the logging winch is recovered and utilized, so as to realize effective and reasonable regulation and management of energy.

[0005] As a preferred technical solution of the present invention, it includes:

[0006] Step 1: Real-time monitoring and acquisition of parameters of the energy storage device and state parameters of the external power grid, including active power, reactive power, power factor, and power of sudden load changes during logging operations;

[0007] Step 2, when the external power grid is not detected and the power storage device has not reached the lower limit, the energy storage device alone provides power to the logging vehicle for logging; during the logging process, the system monitors the SOC and power load of the energy storage device. Due to power consumption, the power storage device reaches the lower limit setting value, and the sound and light alarm prompts the operator that the power is low. The operator can make emergency measures in time according to the alarm to ensure the safety of equipment and personnel.

[0008] As a preferred technical solution of the present invention, it includes:

[0009] Step 3: When an external power grid is detected to be supplying power:

[0010] If the capacity of the external power grid meets the use requirements of the logging system and there is surplus, the energy storage device can be charged simultaneously during the power supply process of the external power grid; if the capacity of the external power grid cannot meet the use requirements of the logging system, the energy storage device will be connected in parallel with the external power grid to supply power to the logging system if the storage capacity of the energy storage device does not reach the offline level;

[0011] During grid-connected operation, step 1 is repeated to issue a charge or discharge instruction by judging the grid status and the energy storage device status; during the real-time monitoring process of step 1, if no charge or discharge instruction is issued, when an impact load is detected and the potential energy generated by the impact load can be recovered, if the storage capacity of the energy storage device has not reached the upper limit, the potential energy recovery PCS will work and charge the energy storage device while supplying power to other electrical equipment in the logging system, during which step 1 is repeated.

[0012] As a preferred technical solution of the present invention, it includes:

[0013] Step 4, when the external power grid supplies power to the logging system alone, the voltage, current, active power and reactive power of the external power grid are monitored in real time through step 1. When the logging winch is lowered, the system monitors the power, bus voltage and current of the winch, and recovers and utilizes the potential energy of the winch, which is the same as step 3; if the storage capacity of the energy storage device is at the upper limit, the excess energy is converted into heat consumption through the braking resistor to ensure the stability and safety of the system.

[0014] As a preferred technical solution of the present invention, the energy storage device is an electrochemical energy storage device.

[0015] The beneficial effects of the present invention are as follows: the electric logging vehicle energy storage smart microgrid control method of the present invention adopts electrochemical and grid power supply to achieve zero emission during the operation process; the energy storage device is used to provide power, which can greatly reduce the noise pollution of the winch system, and at the same time avoid the hydraulic drive hydraulic oil from polluting the environment; the battery energy recovery technology is used to replace the brake heat loss to achieve energy recovery; the energy management system (EMS) is used to implement the detection of the energy consumption information of the energy-using equipment of the logging system operation, and according to the characteristics of the energy storage device, the energy conversion device and the winch operating conditions, the energy can be realized to flow between the energy conversion devices along the best route, thereby improving the energy utilization rate of the logging vehicle operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a control flow chart of the electric logging vehicle energy storage smart microgrid control method of the present invention. DETAILED DESCRIPTION

[0017] The present invention is further described in detail below in conjunction with the accompanying drawings, tables and specific embodiments. The specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0018] The present invention is further described below by way of examples, but is not limited to the following embodiments.

[0019] Example 1

[0020] The electric logging vehicle energy storage intelligent microgrid control method of the present invention is based on the principle of configuring a set of electrochemical energy storage devices that meet the use requirements according to the logging power requirements and the logging vehicle power requirements, and providing power through the electrochemical energy storage device combined with the external grid power of the well site to realize the grid-connected and off-grid operation of the logging equipment; then, the energy management system is used to manage all loads involved in the logging in real time and recover and utilize the potential energy released by the logging winch, so as to realize effective and reasonable regulation and management of energy.

[0021] The present invention adopts electrochemical energy storage control technology to realize the application of energy storage system on logging vehicle, upgrades the traditional fuel logging vehicle to energy storage electric logging vehicle, utilizes electrochemical energy storage technology in combination with the external grid power of the well site to provide power to realize the operation of logging equipment, utilizes potential energy recovery technology to replace braking heat loss to realize energy recovery, and realizes energy flow between energy conversion devices along the best route through energy management system (EMS), thereby improving the energy utilization rate of logging vehicle operation.

[0022] Example 2

[0023] like Figure 1 As shown, in the electric logging vehicle energy storage smart microgrid control method of the present invention, the specific control is as follows:

[0024] Step 1: Real-time monitoring and acquisition of parameters of the energy storage device and state parameters of the external power grid, including active power, reactive power, power factor, and power of sudden load changes during logging operations;

[0025] Step 2, when the external power grid is not detected and the power storage device has not reached the lower limit, the energy storage device alone provides power to the logging vehicle for logging; during the logging process, the system monitors the SOC and power load of the energy storage device. Due to power consumption, the power storage device reaches the lower limit setting value, and the sound and light alarm prompts the operator that the power is low. The operator can make emergency measures in time according to the alarm to ensure the safety of equipment and personnel.

[0026] After the logging vehicle is ready, turn on the control power supply, and the logging system automatically detects the status of the energy storage system and the external power grid. If the external power grid is not detected and the storage capacity of the energy storage device meets the use requirements, the logging system is off-grid at this time, and the energy storage device alone provides power to the logging vehicle. During the logging process, due to power consumption, the storage capacity of the energy storage device reaches the lower limit setting value, and the logging system will remind the operator of insufficient power through sound and light alarms. The operator can make emergency measures in time according to the alarm to ensure the safety of equipment and personnel.

[0027] Example 3

[0028] like Figure 1 As shown, in the electric logging vehicle energy storage smart microgrid control method of the present invention, the specific control is as follows:

[0029] Step 1: Real-time monitoring and acquisition of parameters of the energy storage device and grid status parameters, including active power, reactive power, power factor of the external grid, and power of sudden load changes during logging operations;

[0030] Step 3: When an external power grid is detected to be supplying power:

[0031] If the capacity of the external power grid meets the use requirements of the logging system and there is surplus, the energy storage device can be charged simultaneously during the power supply process of the external power grid; if the capacity of the external power grid cannot meet the use requirements of the logging system, the energy storage device will be connected in parallel with the external power grid to supply power to the logging system if the storage capacity of the energy storage device does not reach the offline level;

[0032] During grid-connected operation, step 1 is repeated to issue a charge or discharge instruction by judging the grid status and the energy storage device status; during the real-time monitoring process of step 1, if no charge or discharge instruction is issued, when an impact load is detected and the potential energy generated by the impact load can be recovered, if the storage capacity of the energy storage device has not reached the upper limit, the potential energy recovery PCS will work and charge the energy storage device while supplying power to other electrical equipment in the logging system, during which step 1 is repeated.

[0033] When the energy storage device and the external power grid are automatically detected, it is detected that the external power grid is involved in the power supply. At this time, the limit value of the external power grid capacity or the front-end circuit breaker capacity can be set through the touch screen. Through internal calculations of the program, if the external power grid capacity meets the use requirements of the logging system and there is a surplus, the energy storage device can be charged simultaneously during the power supply process of the external power grid; if the external power grid capacity cannot meet the use requirements of the logging system, after internal calculations of the program, the energy storage device is automatically put into use and connected in parallel with the external power grid to supply power to the logging system. At the same time, during the entire power supply process, the EMS monitors the power supply status at all times to achieve real-time management of all logging loads.

[0034] Example 4

[0035] like Figure 1 As shown, in the electric logging vehicle energy storage smart microgrid control method of the present invention, the specific control is as follows:

[0036] Step 1: Real-time monitoring and collection of energy storage device parameters and grid status parameters;

[0037] Step 4, when the external power grid supplies power to the logging system alone, the voltage, current, active power and reactive power of the external power grid are monitored in real time through step 1. When the logging winch is lowered, the system monitors the power of the winch, the bus voltage and current. Because the lowering of the winch is a continuous and ongoing process, excess energy will be generated during the lowering period. The potential energy of the winch is recovered and utilized, which is the same as step 3; if the storage capacity of the energy storage device is at the upper limit, the excess energy is converted into heat consumption through the braking resistor to ensure the stability and safety of the system.

[0038] Therefore, compared with the prior art, the electric logging vehicle energy storage smart microgrid control method of the present invention adopts electrochemical and grid power supply to achieve zero emissions during the operation process; the use of energy storage equipment to provide power can greatly reduce the noise pollution of the winch system, while avoiding the hydraulic drive hydraulic oil pollution of the environment; battery energy recovery technology is used to replace brake heat loss to achieve energy recovery; the energy management system (EMS) is used to implement the detection of energy consumption information of the energy-using equipment of the logging system operation, and according to the characteristics of the energy storage device, the energy conversion device and the winch operating conditions, the energy can be realized The optimal route flows between the energy conversion devices to improve the energy utilization rate of the logging vehicle operation.

Claims

1. The electric logging vehicle energy storage smart microgrid control method is characterized by: include: According to the logging power demand and the logging vehicle power demand, a set of energy storage devices that meet the use requirements is configured. The energy storage device is combined with the external grid power of the well site to provide power to realize the grid-connected and off-grid operation of the logging equipment. After that, the energy management system is used to manage all loads involved in logging in real time and recover and utilize the potential energy released by the logging winch, so as to realize effective and reasonable regulation and management of energy.

2. The electric logging vehicle energy storage smart microgrid control method according to claim 1 is characterized in that: include: Step 1: Real-time monitoring and acquisition of parameters of the energy storage device and state parameters of the external power grid, including active power, reactive power, power factor, and power of sudden load changes during logging operations; Step 2, when the external power grid is not detected and the power storage device has not reached the lower limit, the energy storage device alone provides power to the logging vehicle for logging; during the logging process, the system monitors the SOC and power load of the energy storage device. Due to power consumption, the power storage device reaches the lower limit setting value, and the sound and light alarm prompts the operator that the power is low. The operator can make emergency measures in time according to the alarm to ensure the safety of equipment and personnel.

3. The electric logging vehicle energy storage smart microgrid control method according to claim 2 is characterized in that: include: Step 3: When an external power grid is detected to be supplying power: If the capacity of the external power grid meets the use requirements of the logging system and there is surplus, the energy storage device can be charged simultaneously during the power supply process of the external power grid; if the capacity of the external power grid cannot meet the use requirements of the logging system, the energy storage device will be connected in parallel with the external power grid to supply power to the logging system if the storage capacity of the energy storage device does not reach the offline level; During grid-connected operation, step 1 is repeated to issue a charge or discharge instruction by judging the grid status and the energy storage device status; during the real-time monitoring process of step 1, if no charge or discharge instruction is issued, when an impact load is detected and the potential energy generated by the impact load can be recovered, if the storage capacity of the energy storage device has not reached the upper limit, the potential energy recovery PCS will work and charge the energy storage device while supplying power to other electrical equipment in the logging system, during which step 1 is repeated.

4. According to claim 3, the electric logging vehicle energy storage smart microgrid control method is characterized in that: include: Step 4, when the external power grid supplies power to the logging system alone, the voltage, current, active power and reactive power of the external power grid are monitored in real time through step 1. When the logging winch is lowered, the system monitors the power, bus voltage and current of the winch, and recovers and utilizes the potential energy of the winch, which is the same as step 3; if the storage capacity of the energy storage device is at the upper limit, the excess energy is converted into heat consumption through the braking resistor to ensure the stability and safety of the system.

5. The method for using the electric logging vehicle energy storage smart microgrid control method according to claim 4 is characterized in that: The energy storage device is an electrochemical energy storage device.

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